Abstract. The effect of the control valve authority in the process of regulation was investigated. Found a control signal conversion, which takes into account the authority of the valve to align the relationship between the control signal and the flow rate of heat medium. An experiment on the model of thermal point in the Simulink environment was performed. The experimental results were analyzed.
Key words: control valve, the valve full external authority, regulation, conversion of the control signal.
Summary. This article considers emergence of a concept of “human factor” and its influence on the complex “Driver – Car – Road – Environment” (DCRE) system. Specific features of the human role in the transport safety system and in the complete complex DCRE system were analyzed. The author substantiated the necessity to consider human factor when reviewing safety of the DCRE system.
Key words: automobile transport, safety, DCRE system, human factor.
Summary: The main problem is the difficulty of selecting the optimal index for the assessment of business operations. The paper considers the possibility of bringing the registration model system operations. Mathematical processing of food streams of this model makes it possible to develop indicators to measure the effectiveness.
Key words: optimization, system operation, model of operations, efficiency indicator.
Summary: Determining the trends in modern occupational health and safety's concept and examples of cause-effect relations of occupational diseases at Kryvbas mining enterprises.
Key words: the occupational accidents and diseases, a complex working-environment factor, aspects and psychological climate in the production, the occupational health and safety's concept, safety climate.
Summary: The method of mathematical modeling characteristics of pumping units for oil pipelines rotary frequency was improved. For recalculation were used graphic characteristics of pumps, obtained experimentally for the nominal value of rotational frequency. The method is based on the application of similarity theory of centrifugal machines.
Keywords: centrifugal pump, centrifugal machines similarity theory, nominal mode, energy efficiency.
Summary: The article describes the types, functions and means of implementing cloud computing in the learning process. The comparison of the most common characteristics of virtual learning environments and related cloud services.
Key words: cloud computing, interface, internet, cloud educational technology, the quality of education.
Annotation. Are given in Section 1 the theorem and its proof, complementing the classical formulation of the ABC conjecture, and in Chapter 2 addressed the issue of communication with the elliptic curve Frey's "Great" Fermat's theorem.
Summary: This article compares the results of calculations of average delay of three kinds of packages, made in imitation, and the resulting system Anylogic analytical method in queuing systems with relative priority.
Keywords: queuing system with relative priority, average latency, Anylogic.
Abstract: This work presents an algorithm for filtering e-mail. In solving the problem applies linguistic signatures and text analysis. Content analysis involves base of linguistic laboratory, which updates regularly. After the message is analyzed, there is a choice of what to do with it: if it contains spam then it gets a special mark or just removes. If it doesn’t then the message passes on.
Keywords: spam filtering, the conditional probability, Bayes' theorem.
Summary: The article is devoted to highlighting the nature and content of the process water treatment using ozone. Analyzed the types of pollution of water ozonation process, its advantages and disadvantages and the use of water treatment using ozone. The author proposes a new alternative scheme water ozonation.
Keywords: ozone, water ozonation, ozone, hardware circuits.
Summary: Basic elements and concepts of system of knowledge of software engineering are presented. Within systematization bound the methodology, area of knowledge and tools are allocated. Communication between methods of writing of parallel programs and methods of parallel execution of commands is defined. Area of knowledge of program engineering can be correlated to the disciplines studied at universities.
Key words: software engineering, methodology, software engineering tools, methods of parallel processing.